Automatic garage turn-table.



JR. E. HALL. AUTOMATIC GARAGE TURN TABLE.

APPLIOATIOH IILED JULY 15,1912.

Patented J an. 14, 1913.

4 SHEETSSHEET l.

R. B. HALL.

AUTOMATIC GARAGE TURN TABLE.

APPLIOATIONIILED JULY 15,1912.

Patented Jan. 14, 1913.

4 SHEETS-SHEET 2.

R. E. HALL.

AUTOMATIC GARAGE ,TIURN TABLE. APPLICATION rum) JULY 15,1912.

1,050,647. Patented Jan. 14, 191 3.

4 SHEETPr-SHEET 3.

8 I 170V k 7/ R. E. HALL,

AUTOMATIC GARAGE TURN TABLE.

APPLICATION FILED JULY 15, 1912.

Patented Jan-14, 1913.

4 SHEETS-SHEET 4.

I u Henna whmcaow To all whom it may concern: 3

' which is autpiiiatically lockedw'from rota-- permit the vehicle to be run off.

the turn table may be {power of the vehicle itself, and to provide in connection with these driving'wheels idler Corvallis, 'inthe county of -Benton and and useful" Im terinined positionithe turn table during this 25 table. I tating act to block the movementof the ve- UmTED "STATES, TEN OFFICE- .'-'.RQBERT EWING HALL, or coavanms, QR

Be it known that I, Ronnn'r Ew ndHAL citizen ofthe United States, resldlng at State of- Oregon, have invented berta'in new rovements in Automatic Garage Turn-Ta leis, of=;wh'ich the follow: in is'a pecification'h Y y n ventlonrelates to turn tables and a turn table particularly' adapted for. use.

in garages or other establishments housing" vehicles' operated by theirjown power One object ofgn invention is the prov1-' power applied from the vehicle itself.

A further object-is to provide a turntable tion under normal conditions, the locking devices, howe vei released when a; ye; hicle is run 11 n the turn table, f I l I 4 A further ig jectisto provide ineans for holdin the lockin -"devic es out of operation untilt eturn .tab ej is rotated toai predeperiod being free y'inovable to jfany desired position betweenrthe poin't-s at which .itis; locked. A further object isftoprovid 'ineans .for blocking the vehicle on the turir t'a le while the turn table is'beinglmoved tus pre-, venting the vehicle being acciden L lly run 1 off of the turn table, andin this connection to provide means for automaticallyi'eleas ing the blocking means when the turn table has reached a predetermined position to A further object. is to provide in connec-I tion, with a turn table, driving wheels and rollers with which the wheels of an automobile or like vehicle will engage whereby rotated through the wheels or rollers disposed in contiguity' to the driving roller-sand means whereby these idler rollers ma "be locked fromf'movement when the turn fable. is in a predetermined and locked position to. permit the vehicle to. be run on or run olf, and thus provide a proper traction surface for the vehicle wheels enablingthem to be run ;0ll the turn These idler rollers when freely rohicle and thus hold; it ppon the try n table auromn'rrc. GARAGE TURN-TABLE.

Specification of Letters Patent.

Application filed July 15, i912;

table similar to Fi Serial as. 709,560.

Another object is to provide an improved construction of turnj'table frame braced against all strains and to provide means whereby the erly oiled.

e Other objects will appear in the course of ,thefollowing descriptmm invention is illustrated in the accompanying drawings, wherein:

lgure 1 1s a plan view of a turn table constructed in accordance with my invention; Fig. 2 is a section on the line 22 of 'sion, of a turn-ta le 1' which-"is rotated by, 7

Fig.1; Fig. 3 is a plan view of theturn I 1 but showing the plat form of the turn table removed and the walls of the pit within which the table rotates'in section; Fig. 4 is asection on the line" 4- -4: of Fig; fragmentary planviews of the bolt latchingmechanism showing the same in various positions; Fig. 8

01 a portion of the turn table frame, the bolt latch being shown in elevation; Fig, 9 is a fragmentary perspective view of the ,bolt

latch and one of its co-acting parts; Fi

10 is. a perspective for locking the idler rollersv from inovementr Referring now particularly to Figs 1, 2', 3 and 4, it' may be saidflthatmy improved 1; Figs. 5, 6 and 7 are is a fragmentary. sect-ion Patented Jan.14,1913.

various supporting wheels, driving rollers, gears, etc., may be prop a0- view of the driving r0 as, the gears connected thereto, the idler rollers, and the means turntable is intended to be operated within a turn table pit designated generally at 2. This pit may have any desired form and ,is of course deepenough' to aecom1nodate, the turn table so that the upper face of the table will be flush with the floor of the building "within which the turn table i's mounted. Preferablythe walls of'the pit are of concrete and-preferably there is a centralpier"3 for supporting the pivot post upon which the table rotates. Disposed'upon the floor of thepit 2 is a circu lar track designated 4, which track is mount ed upon a series of ties. These ties maybe either embedded in thec'oncrete bottom of the pit, or attached thereto in any suitable nianner The rails ofthe track 4 are so CpliSULlOtedl that they inclin centrally and upwardly, as illustrated inli igs. 2 and 4, so that the weight of the-turn table is uniformly supported. .I do not, of course, wish Olhe limited to any pa l m The turn table frame comprises a plurality of parallel main beams spaced from ,each other by transverse beam members (3 and held by transversely extending bolts 7. Segmental members 9 are provided at opposite ends of the turn table and are attached to the main frame in a manner as will be hereinafter stated. Mounted upon the main frame is a floor support formed of transversely extending relatively light beams 10 and longitudinally extending con I I I do not wish, of; course, to be limited to the precise 'construcnecting members 11.

tion of the supporting frame, as this may be modified in many ways.

Mounted upon the beams 8 at opposite ends of the turn table on the under side thereof are track wheels 12 which engage with the rail 4:. It will be seen that these track wheels are arranged at an angle so as to be at all times approximately parallel to the rail l. Also mounted upon the beams 8 are the traction wheels 13. There are two of these wheels 13, mounted one at each end of the machine, and extending transversely of life longitudinal axis of the turn table. Each of these traction wheels, as illustrated in Fig. 4;, is formed with a tread surface 14 and a toothed face 15, this face being beveled Also mounted at-e'ach end of the turn table is a vertically 'disposed driving shaft 16 carrying at its lower end a beveledgear 17, as shown in Fig. 4,- which engages with the beveled gear 15/ The driving shaft 16 carries upon its upper end a horizontally disposed beveled gear 18. Referring now to Figs. 3 and 4 it.will'be seen that extending across each end of the turn table and mounted in' journal bearings upon the'beams 5.are the horizontally disposed shafts designated 19. Each shaft carries upon it a beveled gear .20 which meshes with the beveled gear wheel 18, at the corresponding end of the turn table frame. There are, of course, two of the shafts 19, one at each end. of'the turn table frame, and each shaft meshes with its corresponding beveled gear wheel 18. Mounted at opposite ends of the shafts 19 are the rollers 21. These rollers'are relatively wide and are adapted to receive and be engaged by the wheel of an automobile or like vehicle. Each shaft 19 is also provided with theopposed' ratchet wheels 22 engaged by the pawls 23. These pawls permit the shafts 19 to rotate in one direction and prevent any rotation of the shaftsdn the opposite direction. The rollers 21 are mounted upon th shafts 19 in any suitable manner, but I have shown them as attached to the shafts by means of collars '24 having wheel designated 27.

screws passing into the roller and each having a set screw engaging with the shaft.

Disposed parallel to each of the shafts 19 are theshafls 25. These shafts are freely rotatable in journaled bearings carriedby the beams 5, and mounted upon these shafts 25 at each end thereof -ure the checking rollers 26. These choching rollers are attached to the shafts 25 in any suitable manner so as to rotatetherewith. Ateaeh end of each roller there is provided a s ur Extending para llel toeach shaft are the rock shafts 28 disposed one on each side of the center of the turn table, and co-acting with the spur wheels 27 are av plurality of locking detents or plunger-s 29, one for each of the spur wheels 27 and operating through guides 30 bolted upon cross-pieces '31 cormecting the beams The plunger-s29 are freely movable through the guides 30. The outer end of each plrmger is formed with a toothed head the teeth of. Wlllrll are adapted to intermesh witlrthe teeth of the wheels 27, as illustrated clearlv in Fig. 10. These plungers 2t) constitute latches, and when the plungers are in interengagomeut with the spur wheels .27 they lock the idler rollers 26 fromrotation,.and lock the shafts 25 from all,

rotation also. -lVl1e11, however, these plun- "g'ers 29 are retracted the shaft and the rollers'26 are free to rotate. In order to operate these latching plungcrs 29. they are operatlvely connected w1th the rock shafts 28, as illustrated in Fig. 10, each rock shaft being provided with two pairs of radially projecting arms 33 connected by links M to the locking plungers. It will be seen from 10 that when the rock shaft is turned in a clock-wise direction the locking plungers .will be forced into engagement with the teeth on the spur wheels 27, while when the shaft is turned in the reverse direction the locking pawls will be withdrawn therefrom;

- It is my intention to provide means whereby the locking detents shall be operatively shifted out of mesh with the wheels 27 when an automobile or like vehicle passes upon the turn table, and I also provide means whereby these locking detents may be operated by hand, as where it is desired to allow the automobile to pass off of the turn table. To this end, each of the shafts 28 is provided with ah arm 35. These arms extend toward each other and overlap at the center of the turntable. Disposed upon and forming one section of the flooring 36 of the turn table (see Fig. 1) is a transversely extending plate 3'7 This plate is yieldinglysupportedin a raised iosition and is of suilicient length that the front wheels of a vehicle driven upon the turntable will engage with the plate to depress the same. This plate is operativelyconnected, as will be the eitie description.

has a 'u'iounted.

iron t s.

later described. to the arms sothat when the plate is depressed against the force of a supporting spring, these arms will be de pre thu rotating the rock shafts and retracting; thelatching plnngers 2 When the automobile passes oil. of the turn table. however the plate 37 will be raised and the planet-rs :Zttwill again be shifted. The plate 3? is j forn'teil with lateral guide wings 38 which! ht down on each side of a central transverse bar a. Springs 39 are disposed between the plate 37 and the uppei-etlge of the bar. 5 so that after the pressure has been relieved upon the plate, the plate will be shifted to its up-raised position. Means are also pro-1 vided for operating the rock shafts 28 by hand, this means being later described'.-' I

The turn table is rotatably mounted upon the pier 3. The pier 3 -upon. its -face is formed with an upwardly projecting hub designated 4:0 (see Fig. 4%) which projects up into a socket 41 formed in a transverse beam 6 connected to the longitudinal beams .13. Ball hearings or anti'friction bearings ma v be applied 'betweenthe hub and the sonnet engaging said hub if desired, such an, application being obvious and needs no 'spe The turn table is 'ordinarilylocked from rotation by bolts disposed atdiametrically" opposite points on the table toengage with. keepers 42. Each keeper is attached-[toa' beam 43 embedded in thefconorete wait of the turn table pit. l lachke'eper hasf a look? ing lug at; formed with a beveledface and a straight face extending perpendicularly to the wall, and adjacent to the straight faee'of the lug the keeper formed with an 'open ing 4.5, or recess. as shown in Figs. 5, 6 and 7,- adapted to receive the extremity of the-bolt.

The bolts on opposite sides of the turn table are precisely of the same construction and operation, and hence a description of one bolt with its operating mechamsm will apply to the otherbolt. Each boltis desighated 4G and projects through the end wall of the supportingframe of the turntable, as shown .in dotted lines in Fig.3.

rearward extension designated at? and having tllGfOl'Il'l of an angle iron. One flange of the angle iron extends parallel to transverse beams 48- upon which the inner bearings for the shafts 1t); 25 and 28 are The forward end of the bolt is rounded. as at 49, so as to ride overthe inclined face of the keeper. Attached to the angle iron extension ll of the bolt is a memh .70 which is preferably formed of strap iron having inwardly bent ends toconstitute shoulders and riveted, or otherwise attache-fl. the vertical flange of the angle This n'ielnber is therefore rectanhnlar n Lor n and constitutes one ofthev ineailtem or} the locking device whereby'the in detail in Fig. 9,;this

relatively flat but boltis heldin a semisretractbd or fullyre-. tracted position. I the bolt and its parts is illustrated in Fig. '5. 'The rear end of the bolt moves over a platform 51, and mounted upon this plat form is a lever 52- having arms'projeetiing in opposite directions, one of the arms normally projecting toward. the forward end of the bolt, while the other arm projects rearward. These arms, as ilh'tstratee'l, are oil-set with relation to each; other. v.The rear end of the lever 52 is connected to a spring 53 whose othe'r end is attached to'any fixed point. The forward end of the lever 52 is engagedin a latch bolt 54 disposed at: rightarmies to the line of movement of the boltan sliding in a guide A flange56 extends upward parallel to the face of the member 50, and this flange is slotted for the passage of the latch bolt; 54. The flange is also slotted, as at 57,' for the passage'of apin 58 projecting from the vertical flange of the extension 47 and projecting through the face of themember 50. This pin on its inner end is reducedwhere it passes through the flange 56, and is providedwith a nut or locking device 59. Carriedupon the inner face of the flange 5G is 'a slide'being longit u dinally slotted as at 61. '1l'1'eslideis provided with a forwardly extending wedge shaped extension 62,- this extension-being extension, is

at its forward 'end,-as at 64 ,"and the wedge-v shaped extension 60' operates'beneath the.-

forward end of the bolt and in this out-away portiornthe sides '63 of the extension operating against the shoulder forming one wall of the cutaway. portion 64. It will thus be seen that as the member 30 is shifted rearward.;that is toward the center of the turn table, the flange 63 will crowd the latch Each bolt b 52 and the bolt 54 ol t'54 outward and away from the member 50, as shown in Fig. 6. The reduced end of the pin 58 passes through the slot: 61 in the member-60 so that after the bolt 46 has been retracted a cert in distance, the member (50 will be acted ufon and will be retracted in its turn and shi t the latch bolt 64 rearward. livotally mounted it The normal ,position of formed with upwardly -.projecting' side walls 63. .It will be seen that t-his wedge -shaped fo rm,- one .side of the extension being in alinementwith. the inner face of the member 60 ,"Whl1 the opposite side diverges. The bolt; 54, asillustratedin Fig.1 9, is cut-away triangular in slide 60, illustrated i pon the platform 51 adjacent to the plate 56 upon which the lever' are mounted is a bell fcrank lever 66 which ispivotjed at,67. One 'arin'of the bell crank level-extends outward and projects behind the shoulder formed by the .rear end of the member 50, while the other arniof the bellcrank, lever extends forward and engagesbehind' thereon end of the I lever 52, as illustrated" in Fig.5. This" Leo forwardly projecting arm of the lever (36 is formed with an upwardly turned extremity the rear arm of the lever 68 which engages 52. Thus, as the bolt 46 audits extension 47 are shifted rearward, the rear. end of the. lever 52 will engage with the laterally projecting arm of the lever 6 and turn it to the position shown in Fig. 6. The forwardly projecting arm will engage the rearwardly projecting arm of the lever 52 and move it outward, and thus retract the latch bolt as illustrated in Fig. 6.

Mounted upon the platform 5i and extendingover the widest end of the wedge member 60 a finger ($7. This finger is resilient and bears down upon the upper face of the member ()0 and frictionally engages the same so to impede its movement.

' This friction finger 7 bears upon the wedge table, and each arm is inwardly turned, as

illustrated in Figs. 3

shown in Fig. 5. rearward to the po: tionshown in Fig.

the turn table to-rotate in the (30 with a force greater than the force of the spring: 53, so that itwill hold the latch bolt 54' in" a retracted position against the force of this spring.

Attached to each of the shafts 28 and projecting therefrom are arms 69, Each arm has attached to it a connecting rod 70, as and 10, the connecting shaft 28 on one side of to the bolt operating t-he opposite side of the turn rod leading from the the turn table runs mechanism on,

at 71, and passes through a slot in the beam 48-and engages and passes through a slot in the angle iro'n extens on -t7,,'as illustrated in Figs. 5, 6 and 7. It WlllthUSlJC SOQll that upon compression of the plate 37. a seconddepression of the arms 35, and the rotation of the rock shafts, both of thcse connecting rods will be retracted and that as they move rearward. the terminal entl'siTl thereof will move through .the slots 72 and eventually engage with the end wall 0 the slots 72. A further retraction of theconnccting rod 70 will draw rearwardupon the exten sion d7 of the bolt -16, thus drawing the bolt out of the opening 45 until the rounded end of the bolt is in such position that 1t ma 2 pass the face ofthe opening and move over the face of the keeper. This is the position hen the bolt is moved the spring '53 will cause the lever to project the latch 54: into engagement with the forward end of the member 50 thus locking the bolt 46 in a semi-retracted position, that is, a position sutliciently retracted to permit direction of the arrow Fig.

i The turn table is rotated through 180 de grees until the rounded end of the bolt comes in contact with the inclined or of the keeper succeeding is: and. rides up thereon. This pushes the bolt 46 and its extension 47 rearward beyond the position shown in Fig. 5 to the position shown in ,voui'ided face j Fig. (3. The pin 58 in this position will engage the rear end of the slot (31 and draw the member ()0 with its wedge rearward. At the same time. the rear end of the member 50 will engage the bell crank lever 66, as shown in Fig. (3, so as to withdraw the latch 54. At the same time that the latch is withdrawn, the wedge (30 is advanced into the cut-awn portion of the latch to the position shown in Fig. (i, and acts as a lock holding thebolt in its retracted position against theforce of the spring 73, and the wedge meniber in turn is friction-ally held in position by the finger 67. The purpose of this action is to free the bolt so as to permit it to be projected and engaged with the opening 45, when the bolt has passed over the apex of .the keeper. As the bolt passes over the "edge of the lug of the keeper, it is projected outward bv means of the spring 73, which, inthe embodiment of my invention illus trated, has an angular form and is attached to one of the transversely extending beams l8. This spring has an upwardly project.- ingr extension which projects into or projects through an opening in the horizontal flange of the extension 47. As soon as the bolt has passed the apex of the keeper all it will beprojected by means of this spring outward to its full extent. and the parts will return to the position shown in Fig. 7, and the turn table be once more locked in place.

While I have illustrated the turntable as being locked at diametricallv opposite points of the pit, it will be obvious'that itmay be locked at a number of points if so desired, and it is also obvious that the turn table may be stopped at any desired angle of rotation without the bolts being projected and j bv merel stopping the inotive'power of the 1 machine. I i ll will be obvious that when a machine i driven upon the turn table the front wheels will li'rst depress the platetlT and that this 1 movement will act to retract the bolt to the position shown in Fig. 5 and also act to 1 thereby unlochthe driving shaft 19. At the same time this movement will act to retract l l the pawls 29 from engagement with the spur wheels 27, thus rendering the loose rollers 26 free to rotate idly. As soonas this occurs. the driving ,wheels of the machine. euga a inp; as thev do with the rollers 21. wil cause the shaft 19 to be rotated, thus rot ating the shaft 16 and the driving wheels 13 and rotating .the turn table; under the power of the machine in the'direction of the arrows shown in Figs. 5, (i'and 7. When the bolts i6 have been operated, as previousl dc- ?cribecl, bythe keepers 4-1: and .the parts )rought into position as shown in Fig. 7, the rock shafts will be turned in reverse directions thus throwinqflm pliwls 29 into en gagenient With the spur whe-ls 27 and lock- 'ing the rollers 26 and 21 from rotation.

This occurs when the I side of each'bolt46 is I I Istrncture against the ja'r of rotation, I may turn table has' turned through 180 degrees. As soon as this occurs, the driving wheel's,,engagingas they will with the rollers 26 which are then fixed,-

cause the machine to move off the turn table.

lirorder to provide means whereby the detents 29 may be thrown into engagement with the-spurlwheels 27 at any desired angle provide hand .levers 74 which extend upat both ends of the plate 37 and extend through slotted plates 75, as illustrated in Fig. Each hand lever is connected'to', a rock shaft 7 6 which is ,provided with-a radially projecting arm 37 connected by means of a link 7 8 to the arm 68 to which the connecting rod70 is attached. Thus, by moving the hand levers the detents 29 may be retracted. This retraction, however, will not cause any shifting ofthe-bolt operating mechanism for the reason that th connecting rod 70 passes through a slotfiQ the extension 47 of the. bolt-' .QIhaVe illus'-" trated two of these levers74,:onelocated at each end of the plate 37 so that the levers may be in convenient position for operation. by the driver 6f a car. .It isto be understood, however, that only one le v'er might be provided. Bdth of theselevers are connected to the same shaft 76,- and this shaft 76 is connected to both sets ofadetents 29.

It will be noted from Fig.4 that the frame of the turn table is bra'c'ed at its ends by means of'segment beams 79 and cross beams" 80 disriosed between thevtransverse. beams48 "and it is also to beqnotedthat. the cross 'bea l8 immediate y adjacentto-th'e rther braced bya bracing member 81 which strengthens the and shock" incident to the bolt striking the Wall of the opening 45. It wil be understood, of 'course.,'thatthe deck beams 10 are bracediin any suitable Way, andfas illustrated, are supported by transverse beams 82, which are in turn sup?" by angular ported from the lower ends-of thebeam 48 braces 83. I'do not wish, h wever, to be' limited to the particular construction of the'supporting frame of the turn table, as it maybe fornied in any suit able manner. I I

In order to provide means'for olhng the be ings of the various wheels, gears, 'etc.,

disposed-upon the face of the turn l" v a dieachflone leading to one of the;

In order to oil the bearings of engaging wheels, I have provided 86 which lead down from the openings and ext'end'to these lower bearings.

The Ol'lQI'fltlOIlbf my dev1ce will be understood from what has gone before. To

recapi-tulatcjthc movement it maybe said that. the'tablc is -norma l ly in the position shown in Fig. .AQcair is driven upon the 65;

turn tablo from either direction, and as its forward wheels engage the plate 37 the plate is depressed. This immediately retracts the bolts totheposition shown in Fig. 5, and at the same time releases the detents 29 from engagement with the spur wheels27. The

upon the rollers 21 will cause the I the turn table with power. It. willbe noted in this conthe car andr furtherxthat the action of the no attention from the-;-'driver. If, however, it'is desired to stop the turn' table'and er mit the, car to'runofl" atapoint intermediate 'of'th-e position of -detents,29"out of their erfgagement with the ur w e e2 aa e rf e rner b 1 turn table I provide an openings 84 "establishments. "It ,-turned and run 0 .t0' ,an

within the garage, 'rther"- it erniits than would be otherwise possiblewhere the where gears are used, quired is r la'tively great. By my construcfor operating t wheels 271and'the of the rollers 26 and 21 are covered by plates 87 so that dust and dirt will notcollect be tween the teeth of these gears and impede their action. At the same time those plates maybe readily removed so as to permit the gears. to be inspected, cleaned or repaired.

held from rotation at the time that a car is driven upon the turn table'by reason of the fact that the bolts 46 are in engagement with the keepers 42. As these bolts prevent the rotation of the 'turn table, and as this in turnprovents any rotation ofthc driving wheels 13, it is obvious that no rotation of the shaft 19 can occuruntil the bolts are unlocked. Theirollers 26, of course, are held from, rotation by 'when a car is driven upon the turn table or driven ofl". the turntable, the driving wheels are operated which act to inanually shift-the turn table is to be operatc'd'by hand. Op-' oration by 'hand is tion the' ach no itself 'su hes the )oWer l PP l Itwi 1 be noted from Fig.1 that the gear e to be driven, and this driving thus locking the-rollers 36,- and nection that there isno'necessity of stoppin turntable is entirely automatioand requi s the keepers, .then the levers --My invention is particulhrlytfu'seful in garages, though it maybe "nsed' iny, other erinits cars tobe readily desiredp0sition' the turn table construction to beieavier =1oo elther very slow, as or else the power re-' It will be noted thatthe rollers 21are the'detents 29 and thl1S" 7 rotation of the driving wheels of the car 0 1 10 ratchetteeth 22 on each will engage with the rollers 26 and 21,

which are then' fixed, and give proper traction bearing for the wheels. As soon, however, as the car has euteredupoi-i' the turn table and depressed the plate 3T the shaft 25 is disengaged so as to permit. the

rollers 26 to rotate, a1nl,inasm1 1ch as the turn table is freely revolved, the-rollers 21 are then freely rotated with the shaft .19,

and both the rollers 21 and 26 to this extent are idler rollers, the rollers 21, however, constituting the driving rollers whereby power is transn'iitted to the driving wheels 1.3. The rollers 26 constitute checking rollers, thet'orward andrear wheels of the.

machine resting between the rollers 26 and. 21. 4 I It might be possible to dispense with the rollers 26 under certain circumstances so as to allow the wheels to bear upon the rollers 21 alone. The rollers 26, however, form a traction surface with which the driv-' ing Wheels of the machine engage when the machine is being driven oif of the turn table, and likewise give a better support to the Wheels of the machine than would be afforded merely by using the rollers Having thus described my invention,

what. I claim as new is: p I

1i The'combination with a turntal'ile, 0t

7 means operative by "the wheels of a motor driven vehicle to cause the rotation of-the turntable, means for locking the. turntable from rotatiomand means operative by the weight of the vehicle for releasing said loeking means. 1

2. The combination with a turntable and a pit. within which the turntable rotates, of

I11C(l nS operative by the wheels of a motor driven vehicle to cause a rotation of the turntable,-locking means engaging the turntable with the pit. to prevent. its rotation. locking means engaging sa 1d wh'cel operated means to prevent a rotation thereof. and

.tion to thereby prevent a rotation of the driving means,and means actuated by the weightof the vehicle for unloekiiig'g said chocking means to thereby permit a-rotation of the turntable and ol: the drivlng means. 4. The eombmation \Vllll 'a"turntable, of

' rotatable driving means disposed dnlthe turntable and operative by engagement with ithe whecls'of a' motor driven vel'iicle to cause the rotation of the turntable, rotatable lchocking means mounted parallel to Stud driving means, means for-loeking said table from rotation, and means operated by the weight of the vehicle for releasing both of said locking means to thereby release the rotatable driving means and permit it to be operated.

5. A turn table for power driven vehicles including a rotatable platform, rotatable members mounted upon said platform, a. driving wheel carried by the platform, gearing opcratively engaging the rotatable members with the driving'wheel whereby the latter may be rotated from the frame, freely rotatable members disposed parallel to the first-named llOtfil'tible members and adjacent thereto, and .means for preventing or permitting the free rotation of said members. 6. A turn table for power driven vehicles including a rotatable platform, a driving wheel carried by the platform, rotatable driving members mounted upon the platform and opcrativel connected with the driving wheel, said members being spaced from each othe* and so disposed as to he engaged by the driving wheels of a vehicle, parallelrotatable members disposed adjameans automatically locking the last-named rotatable members from operation, and means for automatically unlocking said last-named rotatable members to permit their free rotation when a vehicle is driven 'upon the platform.

7. A turn table for power driven vehicles including a rotatable. platform, a driving wheel carried by the platform, spaced rotatable members operatively connected with the driving wheel, said members being'dis posed upon the face of the platform in position to he engaged by the driving wheels of a vehicle, rotatable chm-king rollers also mounted upon the platform adjacent to and parallel with the rotatable members, and means follocking the checking rollers from movement or-rcleasing the checking rollers.

including a rotatable platform, a driving wheel supported by the platform, a driving roller mounted upon the face of the platform in position to be engaged by a driv- -ing wheel of a vehicle, said roller being operativclyl connech-d' to the first-named driving wheel, a checking roller mounted adjarent to and parallel with the firstnamed roller, and (le'ta 'l1able locking means for releasing the checking roller from movement.

9. A turntable for power driven vehicles including a rotatable platform, a shaft carried upon the platform, rollers mounted upon the shaft and disposed upon the face of the platform, means operatively connected to the shaft. whereby the turn table -l may be rotated upon the rotation of the cent to the first-named rotatable. members,

' checking means, means for locking the turn- 8. A turn table' for power driven vehicles relation to the first-named shaft, checking rollers supported in parallel rollers and adjacent thereto, (letents normally holding the said checkingrollers from rotation, and

relation to the first-named rollers and adjacentv thereto, detents normally holding the said checking rollers from] rotation, and means for automatically projecting said det-ents into engagement with. the checking rollers when the turn table hasrotated to a" predetermined position.

11. A turn table-for powerdriven vehicles including a turn table pit, a platform rotatable within the pit, means normally 'locle ing the platform from'rotation within the pit, means operated by the arrival of a voluole upon the platform for disengaging said platform locking means, and rotatable driv mg members operated by anden'gaging-tvlth the driving wheels of the vehicle forrotab including a turn table pit, a rotatable' i'lat ing said platform.

12. .A turn table for power-"driven veh cles formmounted in the pit, means normally locking said platform from rotation, means: operated by the arrival of a'vehicle upon the platform for from further rotation after the platform has .rotated through a certain predetermined an 45 I I i gular distance.

13. A turn table for powerdrivenvehicles:

including a turn table pit, a rotatable plating the platform from..rota ti'on means'ppJ form mounted therein, means'ntxmally lookeratedby the arrival of :vvehic e uponjthe".

platform for releasing said, locking means,. means operated by the driving wheels of the vehicle for rotating the; platform, means automatically locking the platform after the platform has rotated to a predetermined, dis-I tance, and hand raverated-nteans for operatively disengaging the engagement-of the driving wheels of the vehicle from the driving means. y

14, A turn table for power driven vehicles including a turn table pit, a platform rotatably mounted in the pit, means normally" locking the platform from rotation, means actuated by the arrival of a vehicle upon the platform for disengaging sa1d locking releasing said. latfmn look 1 .ing means,-rotatable members operated by and engaging'with the driving wheelsof the] vehicle for rotating said platform, andf. means automatically locking the platform' for means, a driving wheel carried by the plat form, and drlrmg shaft adapted to be en- 'gaged by the drivi-ngvvheels of a vehicle when it arrives upon the platform whereby the platform may be rotated by the power of the vehicle, freely rotating checking roll-- ers disposed adjacent to saidls'hafl; and also engaged by the wheels of the vehicle, means forlocking the said chocking rollers from rotation, means operated by the arrival of sai(l locking means to. permit power to be t 1 the VGlllClGUPOIl the platform for releasing applied .to thedriving shaft, and means for.

automatically locking the platforn'i after it has rotated through a certain angular distancesaid means simultaneously locking the checking rollers from rotation, f

15. A turntable forpower driven vehicles including a; tiirn table pit, bolt keepers mouhted atseparate points in the Walls of the. pit, bolts carried by the platform and engagea'hle with said akeepers said bolts being normally "projected, means operated by the arrival of. a vehicle upon the platform for rc- I tracting said bolts to release the turn table, driving rollers mounted upon the face of the platforn'i wheels of the nectedtosaid driving rollers forrotating the platform, chocking-rollers mountedad jacent to the driving rollers'an'd-=parallel tlte'reto,,means' normally locking said chock ing rollers from rotation, means operated by the arrival of a vehicle'upon'theplatform for unldcking theaid 'cl-iocl'ringrollers and asimp a'neonsly retracting said bolts, and

H or automatically projecting the bolts andl'oc'kmgsaid'choclnng rollers when the ;.-t iirn table is rotated-through predeternnned' angular distance.

" 16.. A turn table for-power driven vehicles including a o-1m. table pit,- bolt keepers mounted at separate'pointsin the walls of the pit, bolt-s carried by the, platform and engagenbletwith said keepers, said bolts being normally projoctethaneaus operated by the arri'valjo a vehicle upon theplatform for retracting saidjbolts to release the turn table, driving rollers mounted npon the face of the platform and engag a'ble by the d riving wheels of the vehicle, means opcrat ively connect/ed to'said drivingrollers for rotating the platform, clinching rollers mounted ad jaeentto thexlriving rollers and parallel thereto, means normally lot-king said chocking rollers from rotation, means operated by 'the arrivalof a vehicle'upon the platform .milmrking said choolt 'iug rollers and simultaneously retracting said l-iolts. mannafor autonmtically pia'ijcotingthebolta' and lot-king said elioeltingrollers when the turn table is rotated through a predeteriumed angular distance, and manually operable means for lockin said chock'in rollers at b h any desired position of the. turn table.

and engageable by the drivingvehicle, means operatl'vely con- 17. A turn table including a turntable pit, a circular track mounted in the pit, a framework rotatably mounted Within the pit, a platform mounted upon the framework, oppositely disposed driving wheels iuigaging I said track, oppositely disposed driving'shafts mounted, upon the platform, meansoperatively engaging said shafts each with its respective driving wheel, rollers mounted upon the shafts and adapted to be engaged by the driving wheels of a vehicle, checking rollers disposed one'adjacent to and parallel with each of the driving rollers, means normally holding said chocking rollers from free rotation, means for normally holding the driving shafts from rotation, means iiormally holding the choeking rollers from rotation, means operated by the arrival of a car upon the platform for releasing said driving shaft and the chocking rollers whereby the driving shaft may be operated from the driving wheels of a vehicle, and means locking the driving shaft from rotation and again locking the checking rollers from rotation after the platform has rotated through a predetermined angular distance.

18. A turn table for power driven vehicles including a turn table pit, a platform rotatably mo-unted therein, means operable by the driving wheels of the vehicle and carried by the platform for rotating the platform, means locking said driving means from rotation, and means operable by the arrival of a vehicle upon the platform for disengaging said lockiug means and permitting the operation of the i'lrivingrmeans by the driving wheels of the vehicle.

19. A turn table for power driven vehicles including a pit. a platform rotatably mounted in the pit, driving means carried by the platform and adapted to have operable engagement with the driving wheels of a veniole, means l'iolding said driving means from operation, means for releasing, said holding means upon the arrival of a vehicle upon the platform, and means for again locking the driving means from operation when theturn' table has moved through a predetermined angular distance.

20. A turn table for power d riveu vehicles including a turn table pit, a rotatable platform mounted therein, tracks within the pit wheels carried by the platform and engaging said tracksand including driving wheels, a driving shaft mounted upon the platform and. having oppositely disposed rollers, said driving shaft being opera lively connected with the driving wheels of the platform, the rollers being so disposed as to be engaged by the driving wheels oli a vehicle when driven upon the plat form. (hocking 1 llers disposed adjacent. to and parallel with the driving r ll-'3 ,nieans normally holding said driving r lers from operation whtn the turn tableis in a predetermined the platform has rotated to a position, means locking the checking rollers from rotation, means operable by the arrival of a vehicle upon the turn table releasing the locking means of both the checking rollers and the driving rollers whereby to permit the driving rollers to be operated by thedriving wheels of the vehicle to rotate the platform, and automatically operating means for again locking the driving rollers and the checking rollers from rotation after predetermined angular distance. 3 .v

21. turn table for power driven vehicles including a turn table pit, keepers disposed around the pit, a track disposed upon the bottom of the pit, a platform rotatably mounted within the pit, wheels carried by the platform and engaging said track, cer- .tain of the wheels being driving wheels,

'oppositely disposed parallel shafts being disposed upon the platform, rollers carried upon opposite ends of the shafts and adapted to be engaged by driving wheels of a vehicle upon a vehicle being driven upon the platform, means normally locking the platform from rotationand the driving rollers and shafts from rotaliolnnieans normally locking the chocking rollers from rotation, means operable automatically by the arrival of a vehicle upon the platform for releasing said platform, holding means, the driving rollers and the checking rollers.

' 22. A turn table for power driven vehicles including a turn table pit having oppositely disposed keepers, a track mounted upon the bottom of the pit, a plat form rotatably mounted within the pit, and having sluiporting wheels engaging said track, certain of the wheels being driving wheels, parallel driving shafts disposed one at each end of the platform, a pair of rollers carried by each sli.alt',sai(l rollers being spaced from each other and positioned to engage the drivingavhcels of a vehicle, means operatively engaging the driving shaft with the driviu wheels of the platform, hormally projccte bolts engaging said keepers and carried by the platform, said bolts preventing the rotation of the 'ilalform and thereby preventing the rotation of the driving wheels and driving rollers, checking rollers disposed in parallel relation 'to and adjacent the driving rollers, detents normally holding the checking rollers from frotation, means oper alod by the \veiglft of thevehiclo upon the plat Form for retrau-ti'n'g said bolts and relrar-ting said rhockiug roller detents \.hereby to pormit'the rotation of the platform under the power of the vehicle, and means for releasing the bolts and reengaging the detenls with the chocking rollers when the turn table "is rotated through a predetormined angular distance.

2:", turn table inchiding a circular track, a platform rotalably mounted upon upper end of the vertical shaft, a beveled gear on the driving shaft engaging therewith, and rollers fixedly mounted on the driving shaft andspaced from each other and disposed upon the platform so as to be engaged by' the-driving wheels of a power driven vehicle.-

24. A turn table "forpower driven vehicles including a circular track, a platform, supporting wheels carried by the platform and operating on the track, driving wheels also carried by the platform and engaging said track, vertical shafts each operatively connected with one of the driving Wheels, beveled gearwheels carried by the upper ends of said shafts, oppositely disposed parallel horizontally arranged dri'ving'shafts carried upon said platform, beveled gear wheels oneach shaft engaging the beveled gear wheels on the upper ends of the vertical shafts, a pair of oppositely disposed rollers carried on each of the horizontal driving shafts and spaced from each other to permit of their engagement by the wheels of a power driven vehicle, ratchet wheelsalso carried by said driving shafts, and pawls engaging said ratchet wheels t'orotation in one direction. l

25. In a turn table for power driven vehicl'es,a circular track, a rotatable platform wheels carried by the platform and engaging with said track and including driving wheels, oppositely disposed horizontal shafts mounted upon said platform and opera-- tively connected to said driving wheel's, rollers mounted upon the shafts and spaced from each other a distance. equal to the width of: a car to be accommodated by the middle of the platform and-having a length equal to the Wheel base of the vehicle, and

platform, oppositely disposed shafts extending parallel to the said driving shafts, rollers mounted upon said shafts and parallel to the first-named rollers, spur gears carried by the shafts, detents normally projecting into the spur Wheels to prevent the rotation of said rollers, parallel rock shafts having radially arranged arms, and the rock shafts operativelyengaging said ,detents, a vertically yielding plate disposed at the arms on each rock shaft projecting beneath the plate and adapted to be depressed by a depression of the plate to cause a rotation of the rock shaft to withdraw the detents from their engagement with the spur gears.

26. A- turn table for power driven vehicles including a pit having oppositely disprevent, their posed keepers, carried on the wall thereof, a circular track at the bottom of the pit, a rotatable platform having wheelsengaging 'said' track, driving wheels carried by the platform and engaging with said track, horizontally arranged driving shafts mount ed. upon the platform and each operativel'y engaging with one. of said driving Wheels, each shaft being adapted to be engaged by the driving wheels of a vehicle on the platform to rotate the platform, checking roll ers disposed parallel to said shaft, means holdingsaid checking rollers from operation a spring actuated bolt carried by the platform and adapted to engage said keepersfand hold the platform from rotation, a depressible member actuated by the weight of the vehicle upon the platform and when depressed withdrawing the locking means from the checking rollersand acting to re- -tract said bolt, a latchfoperatively engag- 'ing the bolt in a partially retracted position and operatively engaging the bolt when partially retracted to hold it in its retracted osition to permit the rotation of the platorm, and means operative by the engagemerit of'the partially retracted bolt' with a second keeper releas ng said latch and perin-itting the bOlt'tO be'projected into-lock ing engagement'with'the keeper.

27. A turn table for vehicles including-a pit, spaced keepers mounted upon the walls of the pit and each including a lug having'a beveled face and a straight face, the keeper bein perforated at the base of the lug, a plat 'orm"rotatably mounted in the pitfa' spring actuated bolt normally projecting into the. opening. in the keeper and holding the platform from rotation, means actuated by' the arrival of a'vehicle upon the plat form for retracting said botfrom said opening to thereby permit the platform to be rotated in a direction opposite to the inclined face of the keeper, means for holding said bolt in its partiallyretracted position,

and means actuated by the engagement of the bolt with the inclined face of the lug on the next succeeding keeper for releasing said holding means and permitting the latch to be projected into engagement with the opening of said last-named keepem 28. A turn table for power driven'vehicles including a pit, keepers mounted at spaced intervals on the walls of the pit, each'keeper including a perforated plate having a lug projectingfrom the plate adjacent to 'the perforation, one face of the lug being er pendicular to the keeper and the other ace being inclined, a platform rotatablymount ed in the pit, a spring actuated bolt'slidingly supported at one end of the platform and adapted to engage in the perforations of the keepers, the bolt having an inwardly projecting extension, a laterally projecting member carried by the extensionand formed 'tti with oppositely disposed shoulders. a spring uetnnted latch projecting into engagement with the forward shoulder of each extension, e-lever operatively connected to the lat-ch and hnvin tin arm projecting beyond the rear'most shoulder of each extension and arranged to retract the hitch upon a rearward movement of the bolt and its extension, a Wedge moving-with the extensio hut' movable independently thereof zineoperatively engaged with the extension to shift into engagement with the latch to hold it open as the bolt and extension are moved rearward, a depressible member mounted at thecenter'of the platform, and means operatively engaging the depressible member and said bolt to retract the latter on a downward movement of said depressihle member to a position out of engagement with the perforation in the keeper to permit the latch to engage the shoulder on the extension and hold the bolt in its partially retracted position, the said wedge being operated by a further retraction of the boltupon its engagement with the inclined face of the lug'on the opposite keeper to thereby release the bolt and permit its projection into engagement with the perforation on the last-named keeper. In testimony whereof I :itlix my ture in presence of two witnesses.

ROBERT EWING HALL. [the] Witnesses:

LOUVIA Dm'is, J. F. YATES.

si gna- 

